database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-08-08 11:22:35 +03:00
Code Activity

MDEV-31721: Cursor protocol increases the counter of "Empty_queries" for select

Browse Source 
Problem:
  Empty queries are incremented if no rows are sent to the client in the
  EXECUTE phase of select query. With cursor protocol, rows are not sent
  during EXECUTE phase; they are sent later in FETCH phase. Hence,
  queries executed with cursor protocol are always falsely treated as
  empty in EXECUTE phase.

Fix:
  For cursor protocol, empty queries are now counted during the FETCH
  phase. This ensures counter correctly reflects whether any rows were
  actually sent to the client.

Tests included in `mysql-test/main/show.test`.
This commit is contained in:
Raghunandan Bhat
2025-06-24 12:59:16 +05:30
committed by Raghunandan Bhat
parent 7ab205b009
commit 2c7cea28da
8 changed files with 154 additions and 67 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
sql/sql_prepare.cc
View File

@@ -3767,6 +3767,9 @@ void mysqld_stmt_fetch(THD *thd, char *packet, uint packet_length)
cursor->fetch(num_rows);
if (!thd->get_sent_row_count())
status_var_increment(thd->status_var.empty_queries);
if (!cursor->is_open())
{
stmt->close_cursor();